Home / 3,121.29-4,684.82-2,184.57

Finding the Fourth Proportional to 3,121.29, 4,684.82 and 2,184.57

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Solution

The fourth proportional to 3,121.29, 4,684.82 and 2,184.57 is: 3,278.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.29 : 4,684.82 = 2,184.57 : x
  2. Step 2: Convert to fraction form
    3,121.29/4,684.82 = 2,184.57/x
  3. Step 3: Cross multiply
    3,121.29x = 4,684.82 × 2,184.57
  4. Step 4: Simplify right side
    3,121.29x = 10,234,306.30
  5. Step 5: Solve for x
    x = 10,234,306.30/3,121.29
  6. Step 6: Final answer
    x = 3,278.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.